GRB 240529A：双重激波的故事
高能天体物理现象
2024-09-27 v1
摘要
得益于快速增长的时域观测设施，我们正进入伽马射线暴（GRB）研究的黄金时代。在本快报中，我们报告了利用爆发光学观测者与瞬变探索系统、内华达山脉天文台1.5米望远镜、中国2.5米广域巡天望远镜、大型双筒望远镜和伽利略国家望远镜对GRB 240529A的观测。GRB 240529A的瞬时辐射显示出两个能量相当的爆发阶段，中间间隔约400秒的宁静期。结合GRB坐标网络的所有可用数据，我们揭示了在爆发后约秒同时出现的X射线平台和光学再增亮现象。与通常对类似GRB所引用的磁星能量注入模型不同，多波段辐射可以更好地解释为中央引擎分别发射的两道激波。光学峰值时间及我们的数值模拟表明，后一道激波的初始体洛伦兹因子约为50，这意味着后发喷流应为吸积驱动，且具有比典型喷流更高的质量载荷。两次瞬时辐射阶段之间的宁静期可能由中央磁星或黑洞不同吸积状态之间的转变，或回落吸积过程引起。对瞬时阶段具有多个辐射阶段的类似暴发样本进行充分的后随观测，将有助于探索GRB中央引擎的物理机制。
引用
@article{arxiv.2409.17983,
title = {GRB 240529A: A Tale of Two Shocks},
author = {Tian-Rui Sun and Jin-Jun Geng and Jing-Zhi Yan and You-Dong Hu and Xue-Feng Wu and Alberto J. Castro-Tirado and Chao Yang and Yi-Ding Ping and Chen-Ran Hu and Fan Xu and Hao-Xuan Gao and Ji-An Jiang and Yan-Tian Zhu and Yongquan Xue and Ignacio Pérez-García and Si-Yu Wu and Emilio Fernández-García and María D. Caballero-García and Rubén Sánchez-Ramírez and Sergiy Guziy and Ignacio Olivares and Carlos Jesus Pérez del Pulgar and A. Castellón and Sebastián Castillo and Ding-Rong Xiong and Shashi B. Pandey and David Hiriart and Guillermo García-Segura and William H. Lee and I. M. Carrasco-García and Il H. Park and Petrus J. Meintjes and Hendrik J. van Heerden and Antonio Martín-Carrillo and Lorraine Hanlon and Bin-Bin Zhang and Alain Maury and L. Hernández-García and Maria Gritsevich and Andrea Rossi and Elisabetta Maiorano and Felice Cusano and Paolo D'Avanzo and Matteo Ferro and Andrea Melandri and Massimiliano De Pasquale and Riccardo Brivio and Min Fang and Lu-Lu Fan and Wei-Da Hu and Zhen Wan and Lei Hu and Ying-Xi Zuo and Jin-Long Tang and Xiao-Ling Zhang and Xian-Zhong Zheng and Bin Li and Wen-Tao Luo and Wei Liu and Jian Wang and Hong-Fei Zhang and Hao Liu and Jie Gao and Ming Liang and Hai-Ren Wang and Da-Zhi Yao and Jing-Quan Cheng and Wen Zhao and Zi-Gao Dai},
journal= {arXiv preprint arXiv:2409.17983},
year = {2024}
}
备注
Resubmitted to ApJL after addressing the referee's comments; comments are welcome